package com.atguigu.gulimall.member.config;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

/**
 * Copyright (c) 2019-2029 星大陆 All Rights Reserved
 * <p>
 * Project: gulimall
 * Package: com.atguigu.gulimall.order.config
 * Version: V 1.0
 * <p>
 * Created by guoxiaolong on 2021/01/18 19:19
 */
@Configuration
public class GuliFeignConfig {

    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor() {
        return new RequestInterceptor() {
            @Override
            public void apply(RequestTemplate template) {
                // 1、RequestContextHolder 拿到刚进来的这个请求
                ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
                if (attributes != null) {
                    System.out.println("RequestInterceptor 线程...." + Thread.currentThread().getId());
                    // 老请求
                    HttpServletRequest request = attributes.getRequest();
                    if (request != null) {

                        // 同步请求头数据，Cookie
                        String cookie = request.getHeader("Cookie");

                        // 给新请求同步了老请求的cookie
                        template.header("Cookie", cookie);
                    }
                }
            }
        };
    }
}
